Pith Number

pith:SPONR5H2

pith:2010:SPONR5H2ILJU7JNAPPGVYQGWST

not attested not anchored not stored refs pending

Online Importance Weight Aware Updates

John Langford, Nikos Karampatziakis

arxiv:1011.1576 v4 · 2010-11-06 · cs.LG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SPONR5H2ILJU7JNAPPGVYQGWST}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:19:43.566700Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93dcd8f4fa42d34fa5a07bcd5c40d694f38c6cb89c767fade0b7818f44114ce0

Aliases

arxiv: 1011.1576 · arxiv_version: 1011.1576v4 · doi: 10.48550/arxiv.1011.1576 · pith_short_12: SPONR5H2ILJU · pith_short_16: SPONR5H2ILJU7JNA · pith_short_8: SPONR5H2

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SPONR5H2ILJU7JNAPPGVYQGWST \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 93dcd8f4fa42d34fa5a07bcd5c40d694f38c6cb89c767fade0b7818f44114ce0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c97eb766480126466d8e3135957d0739f5dced1b8cc7a7d775711df07c3ff8c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2010-11-06T18:40:15Z",
    "title_canon_sha256": "5fda3188c04bdd27e15ac7a7dfc85ad1f0abbc4f8e30721b41022d635d0ae93e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1011.1576",
    "kind": "arxiv",
    "version": 4
  }
}